I've had a legacy RadioRA system for many years and have been happy with this system. I've been using incandescent bulbs throughout this period. This week, I tried some experiments with high efficiency LED BR30 bulbs. All tests failed badly. The most concerning issue is that I was unable to turn off any lights unless there was also an incandescent bulbs on the switch . For example, if an switch controlled 2 bulbs and both bulbs were LEDs, then I would be unable to turn the lights off. However, if 1 bulb was LED and other other incandescent, I was able to turn the lights off. Other issues include blinking and not being able to dim below ~60% of the lumens I am used to with incandescent on maximum. The LEDs seem to work better the more bulbs are on the switch. For example, a switch with controlling 4 LEDs would work far better than a switch with a single LED. Perhaps the problem is too low a minimum load. Most of the dimmers I tested were RA-6Ds, which have a listed minimum load of 50W, so 4 LEDs is near the rated to minimum load, but 1 is far below the minimum. Does anyone have ideas/solutions for getting legacy RadioRA to work with high efficient LED bulbs? Or more detail about why LEDs do not turn off on my system?